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    <title>Document</title>
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    <textarea name="" id="">本协议由甲方[甲方名称]与乙方[乙方名称]于[签订日期]签订。双方同意，本协议旨在明确双方在[合作内容]方面的权利和义务。</textarea><br>
    <button disabled="true">我同意这个协议(60秒)</button>
</body>
<script>
    //1.获取同意按钮
    //2.给按钮设置内容倒计时
    //3.时间结束启动按钮disab
    let but = document.querySelector('button');
    let time = 60;
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        but.innerHTML = `我同意这个协议(${time})`;
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        }
    }, 100)

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